4-Aminopyridine-mediated increase in long-term potentiation in CA1 of the rat hippocampus.

Abstract:

:The effect of 4-aminopyridine (4-AP) on long-term potentiation (LTP) was studied in the hippocampal slice preparation of the rat. Field excitatory postsynaptic potentials (EPSPs) were recorded and evoked in the stratum radiatum of the CA1. Both the low frequency EPSP and LTP of the EPSP were significantly increased by treatment with 4-AP. These effects were inhibited by increasing the magnesium concentration from 1 to 4 mM. Pretreatment with 20 microM DL-2-amino-5-phosphonovalerate antagonized only the increase in LTP produced by 4-AP. It is suggested that 4-AP enhances Ca influx either pre- or postsynaptically and thereby increases LTP.

journal_name

Neurosci Lett

journal_title

Neuroscience letters

authors

Lee WL,Anwyl R,Rowan M

doi

10.1016/0304-3940(86)90446-5

subject

Has Abstract

pub_date

1986-09-25 00:00:00

pages

106-9

issue

1

eissn

0304-3940

issn

1872-7972

pii

0304-3940(86)90446-5

journal_volume

70

pub_type

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